Genetically engineered protein based nacre-like nanocomposites with superior mechanical and electrochemical performance

Prodyut Dhar (Corresponding Author), Josphat Phiri, Géza R. Szilvay, Ann Westerholm-parvinen, Thaddeus Maloney, Päivi Laaksonen (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The molecular engineering of proteins at the atomistic scale with specific material binding units and the introduction of designed functional-linkers provides a unique approach to fabricate genetically modified high performance and responsive biomimetic composites. This work is inspired by a tough biological material, nacre, which possesses a hierarchical ‘brick-mortar’ architecture containing multifunctional soft organic molecules, which plays a significant role in improved mechanical properties of composites. A bio-inspired composite, using a resilin-based hybrid protein polymer with selective binding motifs for reduced graphene oxide (RGO) and nanofibrillated cellulose (NFC), was developed. The adhesive and elastic domains of fusion proteins show a synergistic effect with improvement in both the strength and toughness of synthetic nacre. We observed that the hybrid protein could act as a spacer molecule tuning the ion sorption and transport across the inter-layers of NFC/RGO depending on the processing conditions. Interestingly, the protein complexed freestanding solid-state films showed negligible internal resistance and improved supercapacitance suitable for flexible electronic devices. The protein-mediated binding of NFC and RGO reduces the resistance arising from poor electrode/electrolyte interfaces, which is difficult to achieve through conventional routes. The current biosynthetic route for engineering proteins provides a novel prospect to develop materials programmed with desired properties, depending on target applications.
Original languageEnglish
Pages (from-to)656-669
Number of pages14
JournalJournal of Materials Chemistry A: Materials for Energy and Sustainability
Volume8
Issue number2
Early online date19 Nov 2019
DOIs
Publication statusPublished - 1 Jan 2020
MoE publication typeA1 Journal article-refereed

Fingerprint

Nacre
Nanocomposites
Proteins
Graphite
Cellulose
Oxides
Graphene
Composite materials
Flexible electronics
Molecules
Biomimetics
Brick
Mortar
Biological materials
Electrolytes
Toughness
Sorption
Adhesives
Polymers
Fusion reactions

Cite this

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title = "Genetically engineered protein based nacre-like nanocomposites with superior mechanical and electrochemical performance",
abstract = "The molecular engineering of proteins at the atomistic scale with specific material binding units and the introduction of designed functional-linkers provides a unique approach to fabricate genetically modified high performance and responsive biomimetic composites. This work is inspired by a tough biological material, nacre, which possesses a hierarchical ‘brick-mortar’ architecture containing multifunctional soft organic molecules, which plays a significant role in improved mechanical properties of composites. A bio-inspired composite, using a resilin-based hybrid protein polymer with selective binding motifs for reduced graphene oxide (RGO) and nanofibrillated cellulose (NFC), was developed. The adhesive and elastic domains of fusion proteins show a synergistic effect with improvement in both the strength and toughness of synthetic nacre. We observed that the hybrid protein could act as a spacer molecule tuning the ion sorption and transport across the inter-layers of NFC/RGO depending on the processing conditions. Interestingly, the protein complexed freestanding solid-state films showed negligible internal resistance and improved supercapacitance suitable for flexible electronic devices. The protein-mediated binding of NFC and RGO reduces the resistance arising from poor electrode/electrolyte interfaces, which is difficult to achieve through conventional routes. The current biosynthetic route for engineering proteins provides a novel prospect to develop materials programmed with desired properties, depending on target applications.",
author = "Prodyut Dhar and Josphat Phiri and Szilvay, {G{\'e}za R.} and Ann Westerholm-parvinen and Thaddeus Maloney and P{\"a}ivi Laaksonen",
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Genetically engineered protein based nacre-like nanocomposites with superior mechanical and electrochemical performance. / Dhar, Prodyut (Corresponding Author); Phiri, Josphat; Szilvay, Géza R.; Westerholm-parvinen, Ann; Maloney, Thaddeus; Laaksonen, Päivi (Corresponding Author).

In: Journal of Materials Chemistry A: Materials for Energy and Sustainability, Vol. 8, No. 2, 01.01.2020, p. 656-669.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Dhar, Prodyut

AU - Phiri, Josphat

AU - Szilvay, Géza R.

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AU - Maloney, Thaddeus

AU - Laaksonen, Päivi

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